2101937 has 4 divisors (see below), whose sum is σ = 2106480. Its totient is φ = 2097396.

The previous prime is 2101909. The next prime is 2101961. The reversal of 2101937 is 7391012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2101937 - 2⁶ = 2101873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487 + ... + 2532.

It is an arithmetic number, because the mean of its divisors is an integer number (526620).

2^2101937 is an apocalyptic number.

It is an amenable number.

2101937 is a deficient number, since it is larger than the sum of its proper divisors (4543).

2101937 is an equidigital number, since it uses as much as digits as its factorization.

2101937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 2101937 is about 1449.8058490708. The cubic root of 2101937 is about 128.0972771271.

Adding to 2101937 its reverse (7391012), we get a palindrome (9492949).

The spelling of 2101937 in words is "two million, one hundred one thousand, nine hundred thirty-seven".